English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Multiwavelength view of SPT-CL J2106-5844 - The radio galaxies and the thermal and relativistic plasmas in a massive galaxy cluster merger at z ≃ 1.13

Di Mascolo, L., Mroczkowski, T., Perrott, Y., Rudnick, L., Jee, M. J., HyeongHan, K., et al. (2021). Multiwavelength view of SPT-CL J2106-5844 - The radio galaxies and the thermal and relativistic plasmas in a massive galaxy cluster merger at z ≃ 1.13. Astronomy and Astrophysics, 650: A153. doi:10.1051/0004-6361/202040260.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Multiwavelength view of SPT-CL J2106-5844 - The radio galaxies and the thermal and relativistic plasmas in a massive galaxy cluster merger at z ≃ 1.13.pdf (Any fulltext), 12MB
 
File Permalink:
-
Name:
Multiwavelength view of SPT-CL J2106-5844 - The radio galaxies and the thermal and relativistic plasmas in a massive galaxy cluster merger at z ≃ 1.13.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Di Mascolo, Luca1, Author              
Mroczkowski, Tony, Author
Perrott, Yvette, Author
Rudnick, Lawrence, Author
Jee, M. James, Author
HyeongHan, Kim, Author
Churazov, Eugene, Author
Collier, Jordan D., Author
Diego, Jose M., Author
Hopkins, Andrew M., Author
Kim, Jinhyub, Author
Koribalski, Bärbel S., Author
Marvil, Joshua D., Author
van der Burg, Remco, Author
West, Jennifer L., Author
Affiliations:
1High Energy Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159881              

Content

show
hide
Free keywords: -
 Abstract: Context. SPT-CL J2106-5844 is among the most massive galaxy clusters at z > 1 yet discovered. While initially used in cosmological tests to assess the compatibility with Λ Cold Dark Matter cosmology of such a massive virialized object at this redshift, more recent studies indicate SPT-CL J2106-5844 is undergoing a major merger and is not an isolated system with a singular, well-defined halo. Aims. We use sensitive, high spatial resolution measurements from the Atacama Large Millimeter/Submillimeter Array (ALMA) and Atacama Compact Array (ACA) of the thermal Sunyaev-Zeldovich (SZ) effect to reconstruct the pressure distribution of the intracluster medium in this system. These measurements are coupled with radio observations from the pilot survey for the Evolutionary Map of the Universe, using the Australian Square Kilometre Array Pathfinder (ASKAP), and the Australia Telescope Compact Array (ATCA) to search for diffuse nonthermal emission. Further, to better constrain the thermodynamic structure of the cluster, we complement our analysis with reprocessed archival Chandra observations. Methods. We jointly fit the ALMA and ACA SZ data in uv-space using a Bayesian forward modeling technique. The ASKAP and low-frequency ATCA data are processed and imaged to specifically highlight any potential diffuse radio emission. Results. In the ALMA and ACA SZ data, we reliably identify at high significance two main gas components associated with the mass clumps inferred from weak lensing. Our statistical test excludes at the ∼9.9σ level the possibility of describing the system with a single SZ component. While the components had been more difficult to identify in the X-ray data alone, we find that the bimodal gas distribution is supported by the X-ray hardness distribution. The EMU radio observations reveal a diffuse radio structure ∼400 kpc in projected extent along the northwest-southeast direction, indicative of strong activity from the active galactic nucleus within the brightest cluster galaxy. Interestingly, a putative optical star-forming filamentary structure detected in the HST image is in an excellent alignment with the radio structure, albeit on a smaller scale.

Details

show
hide
Language(s):
 Dates: 2021-06-24
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/202040260
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Les Ulis Cedex A France : EDP Sciences
Pages: - Volume / Issue: 650 Sequence Number: A153 Start / End Page: - Identifier: ISSN: 1432-0746
ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1